Internal keyway milling device



O 1929- w. VON NEUDECK 1,735,841

INTERNAL KEY WAY MILLING DEVICE Filed May 9, 1924 3 Sheets-Sheet 1INVENTOR:

. yrm m fiwdw,

L/ ATTORNEYS.

. Nov. 12, 1929. w. VON NEUDECK 1,735,841

INTERNAL KEY WAY MILLING DEVICE 1 Filed May 9, 1924 4 3 Sheets-Sheet 2 r4 I -1 1' r ATTORNEYS.

w. VON NEUDECK 1,735,841

INTERNAL KEY WAY MILLING DEVICE Filed May 9, 1924 Nov. 12, 1929.

3 Sheets-Sheet 3 INVENTO Patented Nov. 12, 1929 I unis WILHELMVVONnEUnEoK, F rnILAnELPH-ili, PENNSYLVANIA INTERNAL KEYYWAY MILLING'nn'vron Application filed May 9,1924. 1 semi- No. 712,149;

My invention relates to a novel device adapted to cut internal key waysinto the hubs or gears, pulleys, wheels and the like, and it relatesmore particularlyto the type of key way cutting device having a rotarycutter adapted to be guided through the opening in the hub of thegear,pulley or the like, and known as a milling'device.

My invention relates chiefly to a novel milling tool and a millingmachine adapted I to operate said tool and to guide itproperly. Vith theabove ends in view my invention consistsof a novel construction in aninternal key way milling tool having a tubular shank terminating at oneend in. a supporting flange, and havinga circular m lling cutter setinto longitudinal slot at its other end adapted to rotate in a planeparallelto the axis of the shank and having a part of the 29 peripheryof said milling cutter, projecting out beyond the cylindrical surface ofsaid f Figure 2. t

V shank.

My invention further consists of a novel construction in such aninternal. key way milling tool, whereby saidmilling. cutter may berotated by means of arotary driving shaft having its axis of rotation inthe plane of rotation of the cutter, centrally-of the cutting edges ofsaid cutter, said shaft bein'g concentric with said shank.

My invention furtherv consists of a-novel construction in a millingmachine adapted to support, guide, drive and feed said tool, and alsoadapted to support the article'to be milled p Myfinvention furtherconsists of a'novel construction whereby saidtool is replaceably securedtosaid milling machine and whereby tools of various sizes and dimensionsmaybe:

interchanged on said milling machine.

Lastly my invention consists ofa novel construction in sald millingmachine and tool therefor, whereby the lubricating liquid necessary forthe milling operation issupplied to thecutting point without anyadditional conveying means, and bymeans of a; 1 pump contained withinthe drivingspindle' milling cutter 4.

of raid milling machine.

For the purpose of illustrating inven 5 tion, I have shown in theaccompanying section on line 9+9 Figure :10.

drawings forms thereof which are at present preferred by me, since theywill give in prac tice satisfactory and reliable results, a1,

though it-is to be understood that the various I instrumentalities ofwhichmy invention con 5 5,

sistscan be variously arranged and] Organized' and that my invention isnot limited to the precise arrangement and organizationjlof theseinstrumentalities as'herein shownand' described. i i

Figure 1 rQPI'QSGIltS-LEIIL: P 1 View of novel internal key way millingtool embody;

ink my invention. V v

Figure 2 repre'sentsasection. on 1ine;2i2 of Figure'l.

my novel milling tool. 1 Figure 4 represents. a rear end viewof my novelmilling tool, showing the flat driving end of the'shaft. I 1 a Y'Figure5 repr'esents' asection'lon line Figure 6 represents a section on linef6- 6f of Figure 2.

Figure- '1 eproesentsi a E PQ HVe' view of my novel milling machine andtool th r of Figure p 1 ,t

Figure 9 represents: alongitu dinal Figure 8'repr'esents a sectiononline 8-8 vertical my invention, comprising thetubular 'shank i 2terminating in a supporting. flangengfatp 9;

one end and; having atthe other end the rotary 1 milling cutter 4:supported in the longitudinal slot 5, the driving shaft 6. withintheshank 2 and conccntric with the same, the face gear, 7 at the front endof the driving shaft, and the idle gear 8 operatively interposedbetween, said face gear '7 and the gear teeth 9" of the} In theinternalkey way milling tools here bferaii has 'fih Pra i e. FairinFigure 3 representsaffront end viewzo'f the rotary milling cutterdirectly from aface V gear at the end of the driving shaft, by thedirect engagement of the pins of the face gear with the teeth of themilling cutter.

Due to the fact that the axis of rotation of a face gear must be inalignmentwith one edge ofthe' coac'tiiig gear, the internal key I waymilling tools known heretofore, have been actuated through a drivingshaft which was eccentric with respect to the/"cutting edges of themilling cutter as well as with opening; 25H

- 'ifig tobls offpriorffconstruction, the eccentricayei the drivihgshaft varieswith the width] of the'rnilling cutter, said milliiig' toolsare not reaiiilyiht erchaiigeable'; which disadvan respect to the shankof the tool. Duets this eccentricity of the driving'shaft, it has beenimpracticable to construct a key way rriilling tool of sufficientlysmall shank diameter for fiyis ej ii h 1 f teem g utt e ha is to'say.fofany' given diameter of the shank,

o thedi lfiieter of th b p i s e which the-statesmen c rm r amaxi menwidth tthe m l eu liw m ableto supp rti i t S is wide tonieet thestandard require- Due to the fact moreover that in said millta e'is'entirely eliminated by my novel constructibii to be 'desbribed more indetail herebtfwteeh tlie'pin's of the face gear 7 and t e teeth 9 ofthemilling cutter 4, the cutting e gee ofwhich l teeth ease set back, asshown at 11, so asto permit said teeth to be prop I erlyen'gaged by theteeth o'f'the fidle 8 thus .completingthe train of gears betweenthe'sliaft shedthe min ng mitten. The idle gear as will be seen Figure1, is approximately "onehalf the width of the milling cutter, thuspermitting the engaging edge of the idle gear tobe alignment withtheaxis 3 'of the shaft well as ofthe shank 2.

*Therear extremity bfth'e shaft2 is pro- Y vided iwith flat portionadapted to "be engaged by a corresponding recess inthe end of thespindle13, of the milling machine, and

thereby establish an operative engagement between the spindle of. themilling machine shaft of the milling tool. The tool on the head 14- ofthe milling machine, means of theflange 3 bolted to.

a correspondiiig 15 on. the head 14 othe inilli'ngnia'chine, means ofthe bolts 16. As shownin Figure 7 ,theinternal key way milling machineof 7 my novel construction 60 base 18 andh' aving afyer'tically slidabletable 19 steamed at one end on the pivot Onto thistab'le 19 is securedthe article which is to be provided with a keyway, as

eith 't ieihp br th ar hee ibrekerawaypmiy wee -0st to view the.

nlents {hearty for the particular diameter bri'cating liquid, wherebythe said lubricating fluid will be conveyed to the cutting point,

shank 2 of the milling tool 1, which extends through an opening 22 inthe table 19, into the opening of the hub 23 of the gear wheel 21. Thecarriage 24E slidably mounted on the guides 25 of the bed 17 carries thegear box 26, the head; 14:, as well as the source of power gears 31,32-, 33 and 3'4 adapted to effect a continuous feeding of the carriage24 and hence the tool 1 towards the table 19. This is'accomplished'jb-ythe rotation of the internally threaded collar 35'by the train of wormgears (31,32, 38, and 34). The feed screw 36 passing through'the collar'o is' normally free to rotate butis held in the" bed 17 against anylongitudinal displacement. When it is de--' sired to feed forward in thedirection '01 the table 19, the carriage 24tand'hence the milling tool1, the handle 37 tl ireadedly engaging the stationary. screw 38 isturned so as toforce the clamp 39 against the peripheryof a blank p01seen-r the feed screw 36, thereby preventing anyrotation ofthe same, andthus causing the carriage tobe moved forward in the directionofthe'table 19. '7 v For the purpose of efficient and po sitivelubricationof the milling cutter, I provide a neve eoestmeeen ina rotarylubricating pump and fluid'c'ohveying means, for the lu throijiglraii".opening 40' extending" longitudinalfly thi'oughtheshaft 6 of the millingtool, without aiiy additional pipe line, and forced throu'glt's'aidopening40 and onto the cutter a. rotary pump 41, contained inithe head1' 1 and forming part of the spindle 13 of the r milling machine, asillustrated iiLFigures 9' and 11.

It will hewtetp entthh I have-devised a. novel and "useful, internal keyway milling device' which embodies the features of' advan tageenumerated'as desirable in the statement of the invention and the above,description,

a'ndf hile I have, 1 in the present instance shown described a preferredembodiment thereof which will give satisfactory and reinner-e tate, tobe understood that such embodiment is susceptible of modification invarious particulars'jwithout departing from the spiritor scope ofltheinvention or 'sac'rificcing any of its advantages.

described my invention what I claim 'as'n'eW and desire toseeere,Letters Patent,

1; rn asmitten 'keyfeeynu1in device, an elongated housing, alto'othedrotary milling y mounted e arjbfieend of said lmeemg; a driving shaftextehding longitw ing through said shank, a toothed rotary cut terrotatably mounted in one end of said shank, with its plane of rotationsubstantially parallel to the axis of said shaft, a face gear on the endof said driving shaft nearest said cutter, and an idle gear wheeloperatively interposed between said face gear and said ro- 'tary cutterrespectively, said idle gear being approximately one-half the width ofsaid cutter.

3. In an internal key way milling device, a tubular shank terminating ina supporting flange at one end, andhaving'a longitudinal slot extendingtransversely of said shank at its other end, a toothed rotary cutterrotatably mounted in said slot with its plane of rotation parallelto theaxis of said shank, a coaxial driving shaft extending through saidshank, a face gear on the end of said shank nearest said cutter, and anidle gear Wheel operatively interposed between said face gear and saidcutter and engaging the respective teeth of the same.

4:. In an internal key way milling device, a housing, a verticallyslidable table at one end of said housing, horizontal Ways'on saidhousing, a carriage adapted to travel on said ways,

'at a right angle to said table, a tool supporting head carried by saidcarriage and adapted to support a milling tool, a spindle within saidhead adapted to actuate said. tool, a rotary fluid pump within said headand forming part of said spindle, and an opening through said spindleadapted to convey a lubricating fluid l from said pump to said tool.

5. In an internal key way milling device, a housing, a normally verticaltable at one end of said housing, slidable in :a substantially verticaldirection and fulcrumed' so as to be capable of being inclined at anangle to the normal vertical position, horizontal ways on said housing,a carriage adapted to travel on said ways at substantially a right angleto said table, a tool supporting head car ried by said carriage andadapted to support a milling tool, a spindle Within saidhea d adapted toactuate said tool, means adapted to feed said carriage towards saidtable,

means adaptedto actuate said spindle, means intermediate said spindleand said carriage feeding means, to actuate the latter, a rotary fluidpump Within said head and forming part of said spindle, and an openingthrough said spindle adapted to convey a lubricating fluid from said.pump tofsaid tool.

6. In an internal key way milling device,

driving shaft.

a spindle meansto actuate and spindle, a

housing surrounding and supporting said spindle, adapted to travelforward in a'horizontal direction and=having means thereon adapted to"support a milling tool, an elongated tool housing-secured to said toolsupporting means at one end thereof, a rotary cutter near the other "endof said tool housing, a driving shaft within-said housing operativelyengaged by said spindle and adapted to actuate'said rotary cutter,arotary fluid pump Within said housing and forming part of said spindle,and a passageway extending through said spindle and said driving shaftadapted to convey a lubricating fluid from said pump to said rotarycutter.

7 In a device of thecharacter stated, an

elongated tubular housing, a'to-othed cutter rotatably mounted in saidhousing longitudinally thereof, a driving shaft extending longitudinallythrough said housing, aface gear on the end of said driving shaftnearest said cutter, and an idletoothed wheel of less Width than saidcutter pperatively interposed 7 between said face gear and said cutter,and having its central plane of rotation offset from the axis of saiddriving shaft.

- 8. In an internal key-Way milling device,

an elongated housing, a toothed rotary milling cutter rotatably mountednear one end of said housing, a driving shaft extending longitudinallyof said housing and having its axis substantially in the central planeof rotation of said cutter, a face gear on the end of said driving shaftnearest said cutter, and an idle toothed wheel operatively interposedbetween said face gear and cutter and engag ing the respective teeth. ofthe same, having its central'plane of rotation offset from the I itsnearest said cutter, and an idle gear wheel of'less. width than saidcutter operatively interposed between said face gear and said iio rotarycutter respectively, having its central plane of rot-ation'offset fromthe axisof said 10.. Inv an internal key-way milling device, a tubularshank terminating in a supporting flange at one end, andhavingalo-ngitudinal slot extending transversely of saidshank at l its otherend, a toothed rotary cutter rotatably mounted in said slot with itsplane ofrotation parallel to the axis of said shank, a coaxial drivingshaft extending through said shank, aface gear on the end of said shanknearest said cutter, and anjidle gear wheel operativelyinterposedlbetween said'face'gear and said cutter and engaging therespective 2O V cutter, and an idle gear of less width than i V shaft.

teetlr of the same,having its central plane of rotation'oifset from theaxis of said driving ll, In a device of the eharacterstated,an elongatedtubular housing, a toothed cutter "rotatably mounted in saidhousing anddisposed centrally WlthTGSPQCt thereto, a driving shaft extendinglongitudinally of said housing, and having a face gear on the endthereof nearest said cutter, and an ldle I toothed wheel of less widththan said cutter operativelyinterposedbetween said face gear and saidcutter. i

12.. Ina device of the character stated, an elongated tubular housing, acoaxial driving shaft extending through said housing, a

toothed cutter rotatably mounted in said housing and disposedlongitudinally and substantially centrally thereof, a face gearon theend of said driving shaft nearest to said said cutter operativelyinterposed between said face gear and sai d;cutter.

18. In a device of thecharacter stated, an elongated tubular housing, acoaxial driving shaft extending therethrough, a toothed cutter rotatablymounted in said housing near one end thereof, and disposedlongitudinally and generally centrally of said housing, a face gear onone end of said driving shaft nearest said cutter, and an idle gearwheel of less width than said cutter operatively interposed between saidface gear and said outter having its central plane of rotation offsetfrom the axis of said driving shaft.

14s In a device of the characterstated, an elongated tubular housing, atoothed cutter rotatably mounted in said housing, longitudinallythereof, a driving shaft extending longitudinally through saidhousing, aface gear on the end of said driving shaft nearest mounted in said toolhousing, near the free end thereof, a coaxial driving shaft extendmgthrough said housing, having one end thereof operatively engaged by saidspindle, and means of less width than said cutter lntermediate theother-end thereof and said cutter, operatively to connect the same.

16; An internal key-way milling machine,

comprising a tool support and a work support,

one of said two, supports being slidably mounted with respect to theother, parallel to the axis of the tool support, an axial spindle insaid tool support, an elongated'tub'ular tool housing carried by saidtool support andprojecting therefrom, a toothed cutter-rotatahly mountedin said tool housing, near the free u,

end thereof, a coaxial driving shaft extending through said housing,having one end thereof operatively engaged bysaid spindle, and an idlegear of less width than said cutter inter:

mediate of the otherend of said driving shaft and said, cutter--operatively' connecting. the same. i i f V f v i 17 An internal key-waymillingmac'hine, comprising a tool support and a Work supmounted withrespect to'the other, parallelto the axis ofthe tool support, an axialspindle in said tool support," an elongated tubular tool housing carriedby said tool support and projecting therefronnia toothed cutterrotatably mounted in said tool housing, near the free end thereof,acoaxial "drivingshaft eX-. tending through said housing, having voneend thereof operatively engaged by said spindle, a face carried by theother end of said driving shaft, and an idle gear of less width thesaidcutter operatively interposed be: tween said'faee gear and said cutter.

18. An internal key-way milling machine, comprising a tool support and awork support, one of said two supports being slidably mountedwithrespect to the other, parallel to the axis of the tool support, an axialspindle in said tool su ort an elon ated tubular tool housing carried bysaid tool support. and projecting therefrom, a toothed cutter rotatablymounted in said tool housing, near the free end thereof, aeoaxialdrivingshaft extending through said housing, having one end thereofoperatively engagedby said spindle, and a lubrlcant passageway in saiddriving shaft terminating in the'outer end thereof,

in combination with a rotary pump carried hyisaid spindle for forcinglubricant into said passageway. e e

19. An internal key-way milling machine, comprising a tool support and awork support, one of said twos-upports being slidably mounted withrespect to the other, parallel to the saidtool support, an elongatedtubular tool housing carried by sa-idtool support and projectingtherefrom, a toothedfcutter rotatably mounted in said tool housing, nearthe free end th'ereof,a coaxial driving shaft extending 7 through saidhousing, having one end thereof operatively engaged by said spindle,arotary pump carried by said spindle anda fluid passageway communicatingwith said pump extending through said driving shaft and terminating inthe end thereof nearest said cutten. c

20. An internal key-way milling machine,

comprising a tool support'and a work support,

a o port, one of said two supports being shdably 115 axis of thetool'support, an a'xialjspindle'in one ofsaid two supports beingslidably mounted with respect to the other, parallelto the axis of thetool support, an elongated tool housing carried rigidly by said toolsupport, and projecting therefrom, a toothed cutter rotatably mounted.in the free end of said'tool housing, a driving spindle in said toolsupport,

and means of less width than said cutter extending through saidelongated tool housing and operatively connecting said driving spindlewith said rotary cutter.

21. In a device of the character stated, a

tool support and a work support, one of said two supports beingslidaloly mounted with respect to the other, an elongated tool housingdetachably and rigidly secured to said tool support and projectingtherefrom, into 0perative relation to said work support, a toothedcutter rotatably mounted in the free end of said tool housing, anddisposed longitudinally thereof, a driving spindle in said tool supportand means of less width than said cutter contained within and extendingthrough said tool housing operatively connecting said toothedcutter withsaid driving spindle, and means to effect a relative movement of saidtwo supports in timed relation to said driving spindle.

WIL

VQN VNEUDEGK.

